980 DP Video Generator - User Guide Rev. A4
Page 221 July 14, 2014
11.31 CirclesL
11.31.1Description
Special test image developed per customer specifications. In the primary version (shown below), the image
consists of five large white circles on a black background. The circles are positioned in the center and in the
corners of the active video area. The secondary version inverts the image to black circles on a white background.
11.31.2Purpose
This pattern is specified by some monitor manufacturers for checking and adjusting video scan size, linearity, and
over scanning.
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